Mac version of Limera1n is now available for download. Even though the instructions for Mac are exactly the same as the one for Windows, I thought I would do the guide again for our Mac users who come here, searching for the Mac version of the instructions.

NOTE for iPhone 4: If you rely on an unlock, do not update to iOS 4.1 yet as doing so will upgrade your baseband, making it impossible for now to unlock. Either use TinyUmbrella to update to iOS 4.1 without update baseband (instructions here), or wait for PwnageTool which will help you cook custom firmware files for iOS 4.1 without the upgraded baseband.

Step 1: Download Limera1n for Mac OS X from the link given below.

Step 2: Connect your iPhone via USB to your Mac and click on “make it ra1n” as seen in the screenshot below.

Step 3: Now follow the following steps in this order:

Now wait for the device to enter recovery mode:

Now hold “Home” + “Power” buttons:

Release the “Power” button:

now wait for the device to enter DFU mode:

Step 4: Once you are done with this, you will have the limera1n logo on your iOS device screen. Limera1n will now inject the bootrom exploit to pwn your device forever!

Step 5: Jailbreak is done!

Step 6: Now start Limera1n app from your iPhone, iPad or iPod touch and install Cydia as shown in the screenshots below.

Step 7: Now simply restart your device and enjoy the jailbreak!

You can also alternatively follow the step by step guide (with Windows, but applies to Mac as well) for jailbreaking iOS 4.1 using Limera1n in the video embedded below.

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If you are on Windows, you can follow our following step by step guides to jailbreak iOS 4.1 with Limera1n:

Unlock for iOS 4.1 (Old Baseband) There is currently no way to unlock your iPhone on the latest 05.14.02 baseband. If you have managed to preserve your baseband while upgrading to iOS 4.1 using TinyUmbrella, you can use the existing version of Ultrasn0w to unlock your iPhone on iOS 4.1. Step by step instructions for unlocking can be found here.